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DNA Structure and Replication

DNA Structure and Replication
DNA with a G-C content of 50% will melt at approximately

60°C
100 °C
90 °C
70 °C

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DNA Structure and Replication
DNA polymerases I also has

5'-3' endonuclease activity
3'-5'exonuclease activity
5'-3' exonuclease activity
both (a) and (b)

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DNA Structure and Replication
After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

Two
A smear
One
Three

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DNA Structure and Replication
The DNA polymerase in bacteria, responsible for DNA synthesis is

all of these
Polymerase III
Polymerase II
Polymerase I

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DNA Structure and Replication
What is the main damaging effect of UV radiation on DNA?

Depurination
Single strand break
Dehydration
Formation of thymine dimers

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DNA Structure and Replication
What bands will be observed in a cesium chloride gradient after two rounds of replication?

One medium band
One light, one medium and one heavy band
One light and one medium band
One medium and one heavy band

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